package com.ytq.pratice;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Repository;

/**
 * Hello world!
 */
public class App {

    public static void main(String[] args) {
        System.out.println("Hello World!");

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("");
        context.getBean("");


        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext("");


//        HashMap
//        ConcurrentHashMap concurrentHashMap = new ConcurrentHashMap();
//        int a  =  1 << 30;//2的30次幂
//        System.out.println();
//        1073741824
//        concurrentHashMap.put()
    }

}
